A:It's time to go to bed.
B:OK.
— Mr.Song Zhongji visit Suzhou last week?
—No,but he Suzhou with his friends next year.
关于生物体的化学元素,以下叙述正确的是
人群中某常染色体显性遗传病的发病率为36%,一对夫妇中妻子患病,丈夫正常,他们所生的子女患该病的概率是( )